Finding the Fourth Proportional to 347,644.31, 479,679.75 and 211,587.12
Calculator
Solution
The fourth proportional to 347,644.31, 479,679.75 and 211,587.12 is: 291,947.99
Step by Step Solution
- Step 1: Write the proportion equation
347,644.31 : 479,679.75 = 211,587.12 : x - Step 2: Convert to fraction form
347,644.31/479,679.75 = 211,587.12/x - Step 3: Cross multiply
347,644.31x = 479,679.75 × 211,587.12 - Step 4: Simplify right side
347,644.31x = 101,494,056,824.82 - Step 5: Solve for x
x = 101,494,056,824.82/347,644.31 - Step 6: Final answer
x = 291,947.99
Related Problems
Find fourth proportional to 173,822.15, 239,839.88 and 105,793.56
Half scale
Find fourth proportional to 695,288.61, 959,359.50 and 423,174.24
Double scale
Find fourth proportional to 347,645.31, 479,681.13 and 211,588.12
Similar ratio
Find fourth proportional to 521,466.46, 719,519.63 and 317,380.68
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.